As far as color of pollen; something interesting is that poison oak makes orange pollen also. ;)
I've a friend who resides in the Santa Cruz hills who is constantly battling the poison oak. I've not seen any near my apiary but do have loads of ~>
all over the wetlands.
I imagine poison oak honey, pollen, etc., would make for an excellent homeopathic remedy. I've thankfully never experienced the effects of that but have heard of some horror stories.
I'm almost certain it's predominantly blackberry, purple prairie clover & dandelion (that would explain the flavor of the honey a bit as well), but I'll try to get some pics of the flowers currently blooming in my area as well.